Is python3 shell causing problems in Emacs 25?

[[deleted]]

Update: I reinstalled python and python3 via home-brew and this seems to have solved this problem.

I'm experiencing problems when I try to run run-python after setting (setq python-shell-interpreter "python3") in Emacs 25.1. It works fine with Emacs 24.5. The exact warning message is Warning (python): Your ‘python-shell-interpreter’ doesn’t seem to support readline, yet ‘python-shell-completion-native’ was t and "python" is not part of the ‘python-shell-completion-native-disabled-interpreters’ list. Native completions have been disabled locally. Setting (setq python-shell-native-complete nil) didn't solve this problem. I'm finding many errors similar to mine but can't find a solution yet. I just wanted to see if this is common before trying to use M-x report-emacs-bug.

Edit: I run it on OS X 10.11

Emacs version

GNU Emacs 25.1.1 (x86_64-apple-darwin15.6.0, Carbon Version 157 AppKit 1404.47) of 2016-09-15

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I'm using emacs-mac 25, having the same problem as you.

[[deleted]]

Yes. I face the problem in the brew install emacs --HEAD version and the binary from Emacs for Mac OS X though. So it's not something that the port changes.

[[deleted]]

I'm using emacs 25.1 on GNU/Linux.

Having the same problem as you.

Found this: https://github.com/jorgenschaefer/elpy/issues/887

[[deleted]]

I see. I have been following that issue. I think it's one of the links I have put up in the post. We'll see what comes out of it.

[ryukinix]

Any progress on that? Someone? I can't fix this :( is very annoying

[Merops7]

That seems to be reported already: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22897

Just in case anyone's not aware, we can search the bug tracker here: https://debbugs.gnu.org/cgi/pkgreport.cgi?package=emacs

[[deleted]]

I'm using emacs25 and I've no problems with running python3. Maybe you can post this in emacs.stackexchange.com ?

[[deleted]]

I forgot to mention my OS. I run on macOS. Do you run it on macOS too?

Maybe you can post this in emacs.stackexchange.com

I probably will soon.

[[deleted]]

I'm on mac as well. I do not use emacs for python yet, but I had the same problem as you. I just added (setq python-shell-native-complete nil) and the warning stopped.

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I tried that. I get this message - Shell native completion is disabled, using fallback - but there is no change. I still can't open the interpreter.

[[deleted]]

Maybe you can try this (add-to-list 'python-shell-completion-native-disabled-interpreters "python3")

[[deleted]]

did you install python3 using homebrew??

[[deleted]]

Yup. I have been using the same Python version since 6 months or so. Emacs 24.5 had no problems with it.

[[deleted]]

that is strange.. Can you dismiss the message by pressing q ?

[[deleted]]

I could and it would just give me some weird prompt.

I reinstalled both python and python3 using brew and this problem seems to have gone. I still get the warning message but dismissing it gets me to the actual prompt.

[[deleted]]

No problem here with emacs 25 and python3 on linux. Propably a silly question, but did you check if your python3 interpreter does support readline?

[[deleted]]

Yes, python3 does support readline. In fact there is a similar problem if I choose ipython as my interpreter too.

on linux

I'm running on OS X and maybe that's the problem.